Moteurs de stockage

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variables | Mémoire tampon | État InnoDB ]

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2026-01-31 19:12:46 0x13a4 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 26 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 1018716 srv_active, 0 srv_shutdown, 901198 srv_idle
srv_master_thread log flush and writes: 1919914
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 1239784
OS WAIT ARRAY INFO: signal count 1220759
RW-shared spins 661640, rounds 18942902, OS waits 628298
RW-excl spins 5458, rounds 126878, OS waits 3911
RW-sx spins 256, rounds 6984, OS waits 209
Spin rounds per wait: 28.63 RW-shared, 23.25 RW-excl, 27.28 RW-sx
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TRANSACTIONS
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Trx id counter 39617161
Purge done for trx's n:o < 39617161 undo n:o < 0 state: running but idle
History list length 6
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283096167121112, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283096167116944, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (write thread)
Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] ,
 ibuf aio reads:, log i/o's:, sync i/o's:
Pending flushes (fsync) log: 0; buffer pool: 0
2984834 OS file reads, 14086599 OS file writes, 8134873 OS fsyncs
1.65 reads/s, 16384 avg bytes/read, 7.96 writes/s, 4.50 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 0, seg size 2, 0 merges
merged operations:
 insert 0, delete mark 0, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
15.42 hash searches/s, 33.23 non-hash searches/s
---
LOG
---
Log sequence number 25517921030
Log flushed up to   25517921010
Pages flushed up to 25517918500
Last checkpoint at  25517900904
0 pending log flushes, 0 pending chkp writes
4495171 log i/o's done, 2.58 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 247896
Buffer pool size   1003
Free buffers       739
Database pages     258
Old database pages 0
Modified db pages  5
Percent of dirty pages(LRU & free pages): 0.501
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 14013, not young 203029
0.00 youngs/s, 0.00 non-youngs/s
Pages read 2984731, created 100126, written 8171458
2.00 reads/s, 0.00 creates/s, 22.98 writes/s
Buffer pool hit rate 974 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 258, unzip_LRU len: 0
I/O sum[287]:cur[35], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=6216, Main thread ID=7484, state: sleeping
Number of rows inserted 1364, updated 2114726, deleted 50, read 116457413
0.00 inserts/s, 1.38 updates/s, 0.00 deletes/s, 12.69 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2593163
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 26.04 reads/s
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END OF INNODB MONITOR OUTPUT
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